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S8P4.c
Question | Answer |
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Cornea | transparent layer of the front of the eye; covers both the iris and the pupil; also helps refract light |
Pupil | A hole that controls the amount of light that enters the eye by adjusting in size. |
iris | The part of the eye that adjust the size of the pupil; provides characteristic eye color |
lens | A transparent object that refracts light waves such that they converge or diverge to create an image |
convex lens | a lens that is thicker in the middle than at the edges |
Retina | Structure at the back of the eye upon which the lens forms an image |
Optic nerve | Eye structure that transmits information about an image formed on the retina to the brain |
Electromagnetic spectrum | all of the frequencies or wavelengths of electromagnetic radation |
radio waves | electromagnetic waves that have the longest wavelength, lowest frequency, and least amount of energy |
MIcrowaves | Light on the electromagnetic spectrum, light with wavelengths that fall between visible light and microwaves. |
infrared light | light on the electromagnetic spectrum, light with wavelengths that fall between visible light and microwaves |
visible light | a narrow section of the electromagnetic spectrum that the human eye can detect |
ultraviolet light | electromagnetic radiation having wavelengths that fall between visible light and x-rays |
x-rays | electromagnetic waves with short wavelengths, high frequencies and high energy that can travel through soft tissue |
gamma rays | the shortest electromagnetic waves that have the highest frequencies and highest energy. |